'\" t
.\"     Title: sulogin
.\"    Author: Julianne Frances Haugh
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 01/12/2016
.\"    Manual: Comandi per la gestione del sistema
.\"    Source: shadow-utils 4.4
.\"  Language: Italian
.\"
.TH "SULOGIN" "8" "01/12/2016" "shadow\-utils 4\&.4" "Comandi per la gestione del si"
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.SH "NOME"
sulogin \- Single\-user login
.SH "SINTASSI"
.PP
\fBsulogin\fR
[\fItty\-device\fR]
.SH "DESCRIZIONE"
.PP
The
\fBsulogin\fR
command is invoked by
\fBinit\fR
prior to allowing the user access to the system when in single user mode\&. This feature may only be available on certain systems where
\fBinit\fR
has been modified accordingly, or where the
/etc/inittab
has an entry for a single user login\&.
.PP
The user is prompted
.PP
Type control\-d to proceed with normal startup, (or give root password for system maintenance):
.PP
Input and output will be performed with the standard file descriptors unless the optional device name argument is provided\&.
.PP
If the user enters the correct root password, a login session is initiated\&. When
\fIEOF\fR
is pressed instead, the system enters multi\-user mode\&.
.PP
After the user exits the single\-user shell, or presses
\fIEOF\fR, the system begins the initialization process required to enter multi\-user mode\&.
.SH "AVVISI/CAVEAT"
.PP
This command can only be used if
\fBinit\fR
has been modified to call
\fBsulogin\fR
instead of
/bin/sh, or if the user has set the
\fIinittab\fR
to support a single user login\&. For example, the line:
.PP
co:s:respawn:/etc/sulogin /dev/console
.PP
should execute the sulogin command in single user mode\&.
.PP
As complete an environment as possible is created\&. However, various devices may be unmounted or uninitialized and many of the user commands may be unavailable or nonfunctional as a result\&.
.SH "CONFIGURAZIONE"
.PP
Le seguenti variabili di configurazione in
/etc/login\&.defs
cambiano il comportamento di questo strumento:
.PP
\fBENV_HZ\fR (testo)
.RS 4
Se impostato viene utilizzato per definire il valore della variabile d\*(Aqambiente HZ al login dell\*(Aqutente\&. Il valore deve essere preceduto da
\fIHZ=\fR\&. Un valore comune per Linux \(`e
\fIHZ=100\fR\&.
.RE
.PP
\fBENV_TZ\fR (testo)
.RS 4
Se impostato viene usato per definire la variabile d\*(Aqambiente TZ al login dell\*(Aqutente\&. Il valore pu\(`o essere il nome di una \(Fotimezone\(Fc preceduta da
\fITZ=\fR
(ad esempio
\fITZ=CST6CDT\fR), o il percorso completo di un file che contenga la specifica della \(Fotimezone\(Fc (ad esempio
/etc/tzname)\&.
.sp
Se viene specificato il percorso completo di un file che per\(`o non esiste o non pu\(`o essere letto, allora viene utilizzato il valore predefinito
\fITZ=CST6CDT\fR\&.
.RE
.SH "FILE"
.PP
/etc/passwd
.RS 4
Informazioni sugli account utente\&.
.RE
.PP
/etc/shadow
.RS 4
Informazioni sicure sugli account utente\&.
.RE
.SH "VEDERE ANCHE"
.PP
\fBlogin\fR(1),
\fBsh\fR(1),
\fBinit\fR(8)\&.
